Re: [Geowanking] an open source "LANDSAT" camera in your hand?

Fri, 24 May 2013 15:10:22 -0700

Additionally, old floppy disk material has the same properties. I used a piece cut from a  3.5 inch floppy disk as an I.R. filter in a video project a bunch of years ago.


On 24/05/2013, at 5:27 PM, Tyler Ritchie wrote:

Unexposed E-6 slide film also has similar properties. You'd need a 120 roll for putting as a filter or 35mm for use as an on-sensor attachment.


On Fri, May 24, 2013 at 12:43 PM, Jeffrey Warren <[email protected]> wrote:
Indeed - the filter material itself can be a little pricey - but interesting story, a Public Lab member used a DIY spectrometer to scan the material and found a cheap theater gel with the same spectral curve. Great example of open source hardware bootstrapping :-)

the $10 reward is for a 4x4" square of the gel.

Jeff


On Fri, May 24, 2013 at 3:31 PM, Brian Russo <[email protected]> wrote:
That's kinda neat.

For a bit more you can also do this to a DSLR. Not too difficult (DIY
or places will convert for a fee). Big advantage is significantly
better sensor for improved DR.

-  bri

On 5/24/13, Jeffrey Warren <[email protected]> wrote:
> Thought folks who are familiar with balloon
> mapping<http://publiclab.org/wiki/balloon-mapping>
>  in crisis areas <http://publiclab.org/wiki/gulf-coast> might enjoy seeing
> this most recent open hardware project out of the Public Lab community,
> leveraging remote sensing technology in a local, community-based context:
>
> http://www.kickstarter.com/projects/publiclab/infragram-the-infrared-photography-project
>
> "A simple, cheap infrared camera which can measure plant health -- for geek
> gardeners, farmers, and open source DIY scientists."
>
> It basically images photosynthesis with some filter trickiness and post
> processing, building on satellite-based earth-observation imaging
> techniques.
>
> Jeff
>


--
Brian Russo / (808) 271 4166


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Anthony F. Saad
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